[Yggdrasill]

Originally Posted by BigElCat

I find it very interesting, from Alleister Crowley to Anton LaVey.

https://en.wikipedia.org/wiki/Church_of_Satan

...and the new stuff.

https://en.wikipedia.org/wiki/The_Satanic_Temple

The latest buzz..

https://www.wlox.com/2020/07/08/sata...sissippi-flag/

There is no God other than your own self, so they say.

Could Satan be the default god of atheists ?

No. Perhaps you should look up the definition of atheism. I would say that most atheists don't accept the existence of the supernatural, and by definition do not accept the existence of supernatural beings - good or evil - that orchestrate and care about human activity.